click below
click below
Normal Size Small Size show me how
Yr. 10 Chemistry
Chemistry Exam Revision
Question | Answer |
---|---|
What is wrong with: "Na + H2O --> NaOH + H2" ? | It isn't balanced, and it doesn't show state subscripts. |
How do you fix "Na + H2O --> NaOH + H2" ? | 2Na(s) + 2H2O(l) --> 2NaOH(aq) + H2(g) |
What is the Law of Conservation of Matter? | "Matter can be neither created nor destroyed; it can only be changed from one form to another." |
What is the Law of Conservation of Mass? | "In any chemical reaction, the mass of the reactants will equal the mass of the products." |
The rate of reaction is ________ _________ to time. | Inversely proportional. |
The Collision Theory states what? | 1) The reactants must collide. 2) The reactants must collide with sufficient energy to react. 3) The reactants must collide in the correct orientation. |
What are Polyatomic Ions? | Charged particles made up of more than one atom. |
How do you name a Polyatomic Ion? | Name the metal, then the non-metal (MgCl2 – Magnesium Chloride). |
What are Ions? | Charged particles. |
What is the formula for Hydrochloric Acid? | HCl. |
What is the formula for Nitric Acid? | HNO3. |
What is the formula for Sulphuric Acid? | H2SO4. |
What is the formula for Water? | H2O. |
What is the formula for Carbon Dioxide? | CO2. |
What is the formula for Oxygen Gas? | O2. |
Ionic compounds are between a _______ and a __________. | A metal and a non-metal. |
Covalent compounds are between two _______. | Two non-metals. |